Nottingham Station signalling failure causes major disruption
Rail travellers faced long delays after a signalling failure at Nottingham Station.
Some services were cancelled and others delayed by up to 90 minutes. Replacement bus services were in operation.
Trains to all destinations were affected, including services to Leeds, Birmingham and Skegness.
Network Rail said it had resolved the problem but warned it would take some time for services to return to normal.
Passengers are advised to check the East Midlands Trains website for the latest information.
One school party bound for Skegness had to cancel their trip after waiting on a "hot train" for over an hour.
Teacher Jo Harrison said: "We were left in the carriage for ages - but they have looked after us and the children were very well behaved.
"I'm very disappointed for them - they've been looking forward to this."
Rail campaigner David Thornhill said it was "absolute chaos".
He said: "There's been a total signal failure. It could not have happened at a worse time, with the Ashes starting at Trent Bridge tomorrow."
Passengers have already been warned of major service changes between 20 July and 25 August while work takes place.
East Midlands Trains said the work was "essential" to cope with increasing demand for rail travel in the future.
It is part of Network Rail's £100m project to renew the railway around Nottingham.